1 files changed, 58 insertions, 0 deletions
diff --git a/app/src/main/kotlin/com/pitchedapps/frost/views/DragFrame.kt b/app/src/main/kotlin/com/pitchedapps/frost/views/DragFrame.kt
new file mode 100644
index 00000000..c2f36536
--- /dev/null
+++ b/app/src/main/kotlin/com/pitchedapps/frost/views/DragFrame.kt
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2019 Allan Wang
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.pitchedapps.frost.views
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.util.AttributeSet
+import android.view.MotionEvent
+import android.widget.FrameLayout
+import androidx.core.view.ViewCompat
+import androidx.customview.widget.ViewDragHelper
+
+class DragFrame @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null,
+    defStyleAttr: Int = 0
+) : FrameLayout(context, attrs, defStyleAttr) {
+    var dragHelper: ViewDragHelper? = null
+
+    override fun onInterceptTouchEvent(event: MotionEvent): Boolean {
+        return try {
+            dragHelper?.shouldInterceptTouchEvent(event) ?: false
+        } catch (e: Exception) {
+            false
+        }
+    }
+
+    @SuppressLint("ClickableViewAccessibility")
+    override fun onTouchEvent(event: MotionEvent): Boolean {
+        try {
+            dragHelper?.processTouchEvent(event) ?: return false
+        } catch (e: Exception) {
+            return false
+        }
+        return true
+    }
+
+    override fun computeScroll() {
+        super.computeScroll()
+        if (dragHelper?.continueSettling(true) == true) {
+            ViewCompat.postInvalidateOnAnimation(this)
+        }
+    }
+}